Roofing compound.



UNITED STATES PATENT OFFICE.

ROI-LAND S. SOLLENDER, 0F SACRAMENTO, CALIFORNIA.

ROOFING COMPOUND.

No Drawing.

To all whom it may concern Be it known that I, RoLLAND S.,SOLLEN- DER, a citizen of the United States, residing at Sacramento, in the county of Sacramento, State of California, have invented certain new and useful Improvements in Roofing Compound; and I do declare the following to be a full, clear, and exact description of the same.

The object of the invention is to produce a roofing compound which is so made up that it will not soften in hot weather and not become hard or unpliablein cold weather. As far as I have any knowledge the now commonly used roofing compounds all soften under the influence of the heat in hot weather and have a tendency to roll up and creep and become generally misplaced. On the other hand, in cold weather, they harden and then due to the contraction superinduced by cold weather they crack, which of course greatly lessens their efliciency. With my composition however, under the influence of hot weather, the same does not soften and remains in permanent position and then in cold weather the same does not harden so that contraction may take place without cracking the same. The advantages of this are obvious without further discussion. I also aim to produce a roofing which will be practically fire proof.

My improved compound is made up of gas tar as a body, Portland cement to give Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed February 1, 1916. Serial No. 75,599.

it wearing qualities, sugar lime cake to give it flexibility, and extract of Argentine quebracho to prevent it from softening under the influence of hot weather and from hardening in cold weather.

The proportions which I use are substantially as follows, viz: To fifty gallons of gas tar I add one hundred pounds of Portland cement, fifty pounds of sugar lime cake and one quart of extract of Argentine quebracho, and mix the same in a heated condition.

The element which prevents the softening of the composition in hot weather and hardening in cold weather is the extract of Argentine quebracho, as I have discovered after carefully experimenting" with the same.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

1. A roofing compound composed of gas tar, Portland cement, sugar lime cake, and extract of Argentine quebracho, as de scribed.

2. A roofing compound consisting of the materials and in the following relative proportions, namely, fifty gallons of gas tar, one hundred pounds of Portland cement, fifty pounds of sugar lime cake, and one quart of extract of Argentine quebracho, as described.

ROLLAND S. SOLLENDER. 

